JPS59180970A - Manufacture of nickel cadmium storage battery - Google Patents

Abstract

PURPOSE:To improve the capacity storage performance of a nickel cadmium storage battery by setting the temperature of the formation liquid to 30-45 deg.C at the formation of a positive electrode plate and applying recharge at the formation of a negative electrode plate after full discharge thereof. CONSTITUTION:When the plate of a nickel cadmium storage battery is treated, the ion nitrate in the plate is easily discharged by setting the temperature of the formation liquid within the range 30-45 deg.C at the formation of the positive electrode plate, while charge/discharge are performed at the formation of a negative electrode plate. Then, said plate that is fully discharged is recharged at a fixed rate for the actual capacity of the plate. As a result, the amount of the ion nitrate contained in the positive electrode plate can be suppressed to a low standard as much as possible and the effect can be increased by the formation of the negative electrode plate and then the capacity storage performance under the condition of being naturally left alone for a long time can be improved.

Description

[Detailed Description of the Invention] The present invention provides a method for manufacturing a nickel-cadmium storage battery, which includes:
Regarding improvement of capacity storage performance.

Generally, nickel-cadmium storage batteries have a sealed structure, which limits the electrolyte state.

Therefore, compared to a general open-type alkaline storage battery, the capacity storage performance when left alone is inferior.

The amount of nitrate ions (NO, -) contained in the anode plate substrate is a factor that affects capacity storage performance, and it is necessary to keep this amount to the lowest possible level in order to improve capacity storage performance. becomes.

The present invention has been developed in view of the above-mentioned points, and in the treatment of the electrode plates of nickel-cadmium storage batteries, when forming the anode plate, the temperature of the chemical solution is raised to facilitate the release of No and i in the electrode plate.
In addition, when forming the cathode plate,
The effect is increased by performing charging and discharging, and then recharging the fully discharged electrode plate at a constant ratio to the actual capacity of the electrode plate.

The reason for the improvement is thought to be related to the reaction of NOs- inside the battery, but the details are not known.

Next, an embodiment of the present invention will be described.

When the anode plate chemical solution temperature is 35℃ and the cathode plate refill temperature is 20% of the actual capacity, the former is 20℃ and the latter is 0.
It was recognized that the performance was improved compared to the conventional case, which was implemented at 10%.

If the temperature of the anode plate chemical solution is raised, the capacity of the nickel-cadmium storage battery itself tends to decrease, so for this reason, the temperature setting range is between 30℃ and 45℃, and the effect is recognized within this range. It was done. Regarding recharging the cathode plate, if there is too much, it will be H if finished as a battery.

Since gas is generated and the valve body operates and battery performance deteriorates, it is preferable to keep the temperature within a range of 30% at most.

As mentioned above, the present invention has great industrial value in that it is possible to manufacture a nickel-cadmium storage battery with improved capacity storage performance.

Claims (1)

[Claims] When forming the anode plate, the temperature of the chemical solution is raised to 30 to 45°C.When forming the cathode plate, the anode and cathode plates are assembled using a process of recharging after complete discharge. Manufacturing method for nickel-cadmium storage batteries.